Feature 1Aluminum Alloy Frame: The overall frame of the fixed RV window is made of high strength aluminum alloy, and coated with black powder to ensure long term rust and oxidation resistance. 2Rubber Sealing Ring: The camper window frame is equipped with waterproof seals on all sides to ensure complete sealing and waterproof performance. 3Black Tempered Glass: The window is made of 4mm thick black tempered glass to ensure the overall strength and safety of the windows. Tinted glass effectively resists UV rays and heat. 4Multi Purpose: Round Windows can be installed in storage rooms, doors, roof sections, living spaces, lounges or any other location where windows are needed to increase indoor brightness. 5Widely Used: The round window is suitable for Teardrop Cargo Horse Trailer campers, RVs, construction vehicles, etc. Equipped with retaining ring and screws for easy installation.Item Type:FixedRVWindowMaterial: Aluminum AlloyFrame+ TemperedGlass+RubberSealingRingWindow Size: Approx. 530 x 530mm / 21 x 21inInstallation Opening Size: Approx. 500 x 500mm / 20 x 20inFunction:Protectsyourprivacyand ensures full sun, doesn't heat the interior of your RV, fully sealedwindowskeep yourcampercold in summer and warm in winterApplicable: Applicable tocamper, trailer, RV,mobilehouse constructionvehicle, etc., suitable for storage compartment, living room, lounge or any position that requireswindows, can be used for yourcampertrailer modification and other projects .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x FixedRVWindow1 x FixingFrame1 x Pack of Screws (12Pcs)Note1. It is strongly recommended to find professional engineers to assist in installation to ensure a perfect shopping experience2. Please pay attention to avoid damage caused by bumping when disassembling and assembling3. The product size is large, please confirm that it is the correct size you need before purchasing.4. Please allow slight error due to manual measurement.